NumberResearchRecent thousands-block assignments
16 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 951
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-01-05 | 951-269-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2010-01-05 | 951-286-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-12-22 | 951-286-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-12-19 | 951-823-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RIVERSIDE | CA |
| 2009-12-18 | 951-287-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2009-12-17 | 951-703-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MIRA LOMA | CA |
| 2009-12-16 | 951-901-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODCREST | CA |
| 2009-12-14 | 951-254-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | CORONA | CA |
| 2009-12-14 | 951-269-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-12-14 | 951-269-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-12-14 | 951-286-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-12-07 | 951-269-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MORENO | CA |
| 2009-12-07 | 951-744-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | HEMT ANZA | CA |
| 2009-11-30 | 951-525-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2009-11-20 | 951-269-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORENO | CA |
| 2009-11-20 | 951-846-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BANNING | CA |
| 2009-11-11 | 951-595-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMECULA | CA |
| 2009-11-11 | 951-790-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MIRA LOMA | CA |
| 2009-10-27 | 951-609-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ELSINORE | CA |
| 2009-10-22 | 951-256-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CORONA | CA |
| 2009-10-12 | 951-268-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CORONA | CA |
| 2009-10-02 | 951-269-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORENO | CA |
| 2009-10-02 | 951-392-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2009-10-02 | 951-746-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUN CITY | CA |
| 2009-09-23 | 951-287-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PERRIS | CA |
| 2009-09-23 | 951-287-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PERRIS | CA |
| 2009-09-04 | 951-691-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MURRIETA | CA |
| 2009-09-03 | 951-269-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORENO | CA |
| 2009-08-28 | 951-817-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | CORONA | CA |
| 2009-08-27 | 951-595-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMECULA | CA |
| 2009-08-27 | 951-595-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMECULA | CA |
| 2009-08-19 | 951-269-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORENO | CA |
| 2009-08-17 | 951-729-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2009-08-07 | 951-210-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | PERRIS | CA |
| 2009-08-07 | 951-623-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | PERRIS | CA |
| 2009-08-06 | 951-263-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-07-29 | 951-263-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RIVERSIDE | CA |
| 2009-07-29 | 951-268-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CORONA | CA |
| 2009-07-06 | 951-238-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PERRIS | CA |
| 2009-07-06 | 951-269-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-06-25 | 951-268-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | CORONA | CA |
| 2009-06-22 | 951-238-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2009-06-09 | 951-251-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-06-09 | 951-489-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-06-05 | 951-230-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2009-05-04 | 951-392-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2009-04-27 | 951-234-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMECULA | CA |
| 2009-04-24 | 951-249-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MURRIETA | CA |
| 2009-04-24 | 951-530-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2009-04-24 | 951-531-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CORONA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.